4/x=20/25

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Solution for 4/x=20/25 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

4/x = 20/25 // - 20/25

4/x-(20/25) = 0

4/x-4/5 = 0

4*x^-1 = 4/5 // : 4

x^-1 = 1/5

-1 < 0

1/(x^1) = 1/5 // * x^1

1 = 1/5*x^1 // : 1/5

5 = x^1

x = 5

x = 5

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